Hogan, D. R., Salomon, J. A., Canning, D., Hammitt, J. K., Zaslavsky, A. M., & Bärnighausen, T. (2012). National HIV prevalence estimates for sub-Saharan Africa: Controlling selection bias with Heckman-type selection models. BMJ Publishing Group.

Hogan, Daniel R., Joshua A. Salomon, David Canning, James K. Hammitt, Alan M. Zaslavsky, ja Till Bärnighausen. National HIV Prevalence Estimates for Sub-Saharan Africa: Controlling Selection Bias With Heckman-type Selection Models. BMJ Publishing Group, 2012.

Hogan, Daniel R., et al. National HIV Prevalence Estimates for Sub-Saharan Africa: Controlling Selection Bias With Heckman-type Selection Models. BMJ Publishing Group, 2012.